He's got a wicket at least. Dhoni's using him as a trick bowler and as a partnership breaker. There's no such thing that all-rounders need to bowl 5-8 overs minimum. It's the matter of getting the damage done on the opposition. Yusuf didn't let Flintoff settle from the first ball and took the advantage of him in the next delivery, knowing that Flintoff didn't face him Before. Once again, it's the matter of doing the job for the team, not the overs he has bowled. And since the third power play was taken, the fast bowlers eventually came in and did their job.
Experimenting is the thing, Dhoni already got Yuvraj, Harbhajan bowling at the ends and since they were doing well considering Yuvraj got smashed early on, and dhoni wanted them to do their job and they were bowling the overs fast and letting the batsmen only taking singles. After Yuvraj finished his spell, the situation could turn dangerous with England having the power play. So he brought in Yusuf pathan who's known for taking surprise wickets. Many would think that Yusuf wasn't the right choice when two destructive batsmen are at the crease. But Yusuf can get the ball Sometimes to deviate a bit which can result in batsmen getting edges. It has happened twice today, first, the flintoff wicket, just deviated off it's line just a bit which made the ball to hit flintoff's pads. The second, Against shah, which pitched out-side off stump and spun a bit which resulted as an inside-edge off shah's cover-drive.
So, yusuf is a valuable bowler at times, and gets the necessary wickets far easily sometimes and it has happened today.
Was there to be hit to be fair to Sharma, just played it wrong. If we can get Sehwag we're in here. Yuvraj normally struggles against spin, so Swann will have to bowl to him, KP's getting some turn as well, he's bowling better than Samit tbh. England won't win if India bat the full 50 overs, so it's imperative to get wickets here, especially that of Sehwag.
: Time will tell. 
